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Semtech Corporation S2KW16C-4P
- Part No.:
- S2KW16C-4P
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S2KW16C-4P.pdf
- Description:
- DIODE GEN PURP 16KV 6A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:9,889
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Product details
Overview
S2KW16C-4P from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of single 22V I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the S2KW16C-4P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for minimal voltage overshoot, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards in high-voltage bus protection.
Technical Context
The S2KW16C-4P implements a precision-triggered shunt FET architecture: a dedicated trigger circuit detects overvoltage events and activates a low-RDS(on) surge-rated MOSFET, enabling near-constant clamping voltage independent of peak pulse current magnitude. Unlike conventional TVS diodes, its clamping voltage remains stable from −40°C to +125°C due to active FET conduction rather than passive junction breakdown.
It operates as a bidirectional, single-line protector with pins 4–6 serving as the protected input node and pins 1–3 as ground terminals. The device delivers 1120W peak pulse power handling (8/20μs) while maintaining sub-28V clamping up to 40A - critical for safeguarding 22V-rated USB PD controllers and industrial e-fuse inputs against lightning-induced surges and contact ESD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 29V damage threshold of common 30V-rated load switches and PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - satisfies IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) for industrial equipment. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and industrial ESD immunity requirements. |
| Dynamic Resistance | 20mΩ - ensures minimal voltage rise under fast-rising transients, reducing overshoot on protected lines. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with DC-coupled 22V power rails; not intended for high-speed data lines. |
| Operating Temp | −40°C to +125°C - supports extended-temperature industrial and automotive under-hood applications. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound, tape-and-reel packaging (3,000 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path; all three must be connected to minimize parasitic inductance during 40A surge discharge. |
| 4, 5, 6 | IN | Protected line input; parallel connection of all three pins maximizes current sharing and thermal dissipation capability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across 1–40A (8/20μs) and −40°C to +125°C - eliminates thermal derating uncertainty. |
| Surge-rated FET core | Replaces traditional TVS junction; enables 1120W peak power handling with <0.1Ω effective RDS(on) during conduction. |
| Low dynamic resistance | 20mΩ measured between 1A–40A - reduces transient overshoot by >50% vs. typical 150mΩ TVS devices at same current. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive switching noise in motor drives and PLCs. |
| DFN-6 space efficiency | 1.6mm × 1.6mm footprint - saves >60% board area vs. SO-8 or SOT-23 TVS solutions rated for equivalent surge energy. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB Type-C ports supporting up to 20V/5A PD negotiation, exposed to ESD from hot-plug events and system-level surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach the PD controller and buck converter. Use Value: Maintains 27.5–28V clamping across full temperature range - prevents false OVP trips and ensures reliable PD handshake under thermal stress. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient limiter that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents permanent damage to load switch ICs during 40A lightning-induced surges - extends field reliability without requiring oversized external components. |
| 22V Industrial Power Rail Protection | IoT Edge Node DC Power Input Protection |
|
Use Scenario: Securing 22V auxiliary power rails in programmable logic controllers (PLCs), HMI panels, and sensor hubs operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Standalone surge diverter for unidirectional DC supply lines, replacing multi-stage TVS+MOV designs. Use Value: Single-component solution meets IEC 61000-4-5 Level 4 with no derating - simplifies BOM and eliminates coordination timing issues between cascaded protectors. |
Use Scenario: Hardening 22V input of battery-backed IoT gateways and edge AI modules deployed in outdoor or ungrounded installations. IC Role / Device Role / Timing Role: First-line defense against ESD from human interaction and induced surges from nearby AC wiring or RF sources. Use Value: Delivers ±30kV ESD robustness in ultra-compact DFN-6 - enables miniaturized enclosures without sacrificing EMC immunity certification margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical electrical specs and package - confirmed Semtech cross-reference for S2KW16C-4P per official ordering documentation. | Direct functional and mechanical replacement; validated in USB PD reference designs. | Select when sourcing from Semtech-authorized channels with full traceability and lifecycle support. |
| SP1003-02HTG | TVS diode array (2-line), 24V working voltage, 30A IPP, 35V clamping at 30A, 12pF capacitance - higher clamping, lower capacitance, no constant-clamp behavior. | Better suited for low-capacitance data-line protection; unsuitable for 22V power rail clamping where <28V is mandatory. | Consider only for secondary signal-line protection alongside S2KW16C-4P - not a drop-in substitute for primary power rail duty. |
Compared with TDS2211P and SP1003-02HTG, the S2KW16C-4P offers superior clamping stability and lower dynamic resistance for 22V power rail protection, while SP1003-02HTG serves complementary low-capacitance roles but cannot replace S2KW16C-4P in high-current, low-clamp applications.
Availability
S2KW16C-4P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V power rail protection requiring stable component supply, long-term lifecycle assurance, and full compliance with IEC 61000-4-2/4-4/4-5 standards.
Supply support for S2KW16C-4P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, protection, sensing, and wireless infrastructure.
The S2KW16C-4P belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-voltage, high-energy EOS protection applications where clamping stability and thermal insensitivity are critical.
FAQ
What is the exact function of the S2KW16C-4P in a circuit?
The S2KW16C-4P functions as a transient diverting suppressor that actively shunts high-energy EOS events-such as ESD, EFT, and lightning-induced surges-to ground using a precision-triggered FET. It maintains a stable 27.5–28V clamping voltage across its full 40A rating and −40°C to +125°C operating range, making it ideal for protecting 22V power rails where conventional TVS diodes exhibit rising clamping with current or temperature. The S2KW16C-4P is not a passive diode but an integrated protection IC with internal trigger and drive circuitry.
Does the S2KW16C-4P require external bias or control signals to operate?
No, the S2KW16C-4P is fully autonomous and requires no external bias, enable signals, or configuration. It operates passively: when transient voltage exceeds its internal trigger threshold (~25V breakdown), the integrated circuit activates the shunt FET within nanoseconds. All six pins are either input (pins 4–6) or ground (pins 1–3); no additional components or PCB traces beyond proper layout are needed for basic operation. This self-contained behavior is intrinsic to the S2KW16C-4P design.
Can the S2KW16C-4P be used on high-speed data lines like USB SuperSpeed or PCIe?
No, the S2KW16C-4P is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above ~100MHz. It is explicitly designed for DC-coupled power or low-frequency I/O lines such as USB PD VBUS, load switch inputs, or 22V industrial rails. For USB SS, DP/DM, or CC lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) - the S2KW16C-4P serves only the high-voltage, high-current protection role in those same systems.
How does the S2KW16C-4P differ from standard TVS diodes in surge response?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the S2KW16C-4P uses a triggered FET to achieve near-constant clamping - varying only ~0.5V from 1A to 40A. Its 20mΩ dynamic resistance is an order of magnitude lower than typical TVS devices, resulting in significantly reduced overshoot during fast transients. Additionally, the S2KW16C-4P clamping remains stable across temperature, whereas TVS clamping degrades above 85°C. These differences are documented in Semtech's TDS2211P datasheet, which applies identically to S2KW16C-4P.
Is the S2KW16C-4P pin-compatible with other Semtech TDS devices?
The S2KW16C-4P shares the same DFN-6 (1.6mm × 1.6mm) package and identical pinout (pins 1–3 = GND, pins 4–6 = IN) with TDS2211P and TDS2411P, but is not functionally interchangeable without verifying voltage ratings. While S2KW16C-4P and TDS2211P are electrically identical (22V working voltage), TDS2411P is rated for 24V and exhibits higher clamping. Substituting across voltage grades risks overvoltage failure or insufficient protection margin - always confirm the exact working voltage requirement before selecting among S2KW16C-4P, TDS2211P, or TDS2411P variants.
S2KW16C-4P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 16000 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 16 V @ 6 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 2 µA @ 16000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2KW16C-4P FAQ
1.How can I place an order for S2KW16C-4P through Aetrix?
Please submit a Request for Quotation (RFQ) for S2KW16C-4P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S2KW16C-4P reliable?
The price and inventory of S2KW16C-4P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2KW16C-4P is usually 5 days.
3.What payment methods are accepted for S2KW16C-4P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2KW16C-4P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2KW16C-4P?
S2KW16C-4P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2KW16C-4P order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S2KW16C-4P?
For technical support, including S2KW16C-4P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2KW16C-4P requirements.
6.How does Aetrix verify that S2KW16C-4P is sourced from the original manufacturer or authorized distributors?
All S2KW16C-4P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S2KW16C-4P meets industry standards.
7.What is the process for return or replacement of S2KW16C-4P?
All S2KW16C-4P units undergo pre-shipment inspection (PSI). If there is an issue with S2KW16C-4P, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S2KW16C-4P part is unused and in its original packaging.
Return procedure for S2KW16C-4P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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